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Treasury Stock (Details) (USD $)
Share data in Millions, unless otherwise specified
3 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]    
Board-approved share repurchase program of common stock $ 2,000,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1  
Stock repurchase period December 2017  
Repurchased shares under the share repurchase program 0.6us-gaap_TreasuryStockSharesAcquired 1.3us-gaap_TreasuryStockSharesAcquired
Cost of share repurchased under the share repurchase program 47,945,000us-gaap_PaymentsForRepurchaseOfCommonStock 84,455,000us-gaap_PaymentsForRepurchaseOfCommonStock
Remaining authorization under the share repurchase program $ 815,400,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1